New board version: Nano 33 BLE Rev2

[applecuckoo]

This is a quick addition to define a couple of interrupt pins only available on the second revision of the Arduino Nano 33 BLE Sense. In a way, this is to close my own issue, #7991.

I figured that since there weren't any pin-related breaking changes between the two revisions, it was better to add to the existing definition.
This is only based on pin diagrams since I don't have the actual hardware to test this.

[dhalbert]

Thanks for the typo fixes in the description.

I think it would be better for this to be a new board definition. It's a new product with a new stock number: https://store.arduino.cc/products/nano-33-ble-sense-rev2. A new entry (by PR)would be added to circuitpython.org as well. Assuming so, take the _V2 off the pin names.

[dhalbert]

Could you also prepare a PR to add this new board to circuitpython.org? See https://learn.adafruit.com/how-to-add-a-new-board-to-the-circuitpython-org-website. Thanks!

[dhalbert]

I touched up the duplicate PID list by adding a comma to fix the build error. Looks fine now. I'll merge, and you can go ahead and submit a PR to the circuitpython-org repo.

[applecuckoo]

I've opened a PR for the website - see adafruit/circuitpython-org#1426